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Diffstat (limited to 'fs/hostfs/hostfs_user.c')
-rw-r--r--fs/hostfs/hostfs_user.c108
1 files changed, 68 insertions, 40 deletions
diff --git a/fs/hostfs/hostfs_user.c b/fs/hostfs/hostfs_user.c
index 1ed5ea389f15..0acf562a5f06 100644
--- a/fs/hostfs/hostfs_user.c
+++ b/fs/hostfs/hostfs_user.c
@@ -21,12 +21,16 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
int *nlink_out, int *uid_out, int *gid_out,
unsigned long long *size_out, struct timespec *atime_out,
struct timespec *mtime_out, struct timespec *ctime_out,
- int *blksize_out, unsigned long long *blocks_out)
+ int *blksize_out, unsigned long long *blocks_out, int fd)
{
struct stat64 buf;
- if(lstat64(path, &buf) < 0)
+ if(fd >= 0) {
+ if (fstat64(fd, &buf) < 0)
+ return(-errno);
+ } else if(lstat64(path, &buf) < 0) {
return(-errno);
+ }
if(inode_out != NULL) *inode_out = buf.st_ino;
if(mode_out != NULL) *mode_out = buf.st_mode;
@@ -202,58 +206,82 @@ int file_create(char *name, int ur, int uw, int ux, int gr,
return(fd);
}
-int set_attr(const char *file, struct hostfs_iattr *attrs)
+int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
{
- struct utimbuf buf;
+ struct timeval times[2];
+ struct timespec atime_ts, mtime_ts;
int err, ma;
- if(attrs->ia_valid & HOSTFS_ATTR_MODE){
- if(chmod(file, attrs->ia_mode) != 0) return(-errno);
- }
- if(attrs->ia_valid & HOSTFS_ATTR_UID){
- if(chown(file, attrs->ia_uid, -1)) return(-errno);
+ if (attrs->ia_valid & HOSTFS_ATTR_MODE) {
+ if (fd >= 0) {
+ if (fchmod(fd, attrs->ia_mode) != 0)
+ return (-errno);
+ } else if (chmod(file, attrs->ia_mode) != 0) {
+ return (-errno);
+ }
}
- if(attrs->ia_valid & HOSTFS_ATTR_GID){
- if(chown(file, -1, attrs->ia_gid)) return(-errno);
+ if (attrs->ia_valid & HOSTFS_ATTR_UID) {
+ if (fd >= 0) {
+ if (fchown(fd, attrs->ia_uid, -1))
+ return (-errno);
+ } else if(chown(file, attrs->ia_uid, -1)) {
+ return (-errno);
+ }
}
- if(attrs->ia_valid & HOSTFS_ATTR_SIZE){
- if(truncate(file, attrs->ia_size)) return(-errno);
+ if (attrs->ia_valid & HOSTFS_ATTR_GID) {
+ if (fd >= 0) {
+ if (fchown(fd, -1, attrs->ia_gid))
+ return (-errno);
+ } else if (chown(file, -1, attrs->ia_gid)) {
+ return (-errno);
+ }
}
- ma = HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET;
- if((attrs->ia_valid & ma) == ma){
- buf.actime = attrs->ia_atime.tv_sec;
- buf.modtime = attrs->ia_mtime.tv_sec;
- if(utime(file, &buf) != 0) return(-errno);
+ if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
+ if (fd >= 0) {
+ if (ftruncate(fd, attrs->ia_size))
+ return (-errno);
+ } else if (truncate(file, attrs->ia_size)) {
+ return (-errno);
+ }
}
- else {
- struct timespec ts;
-
- if(attrs->ia_valid & HOSTFS_ATTR_ATIME_SET){
- err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, &ts, NULL, NULL, NULL);
- if(err != 0)
- return(err);
- buf.actime = attrs->ia_atime.tv_sec;
- buf.modtime = ts.tv_sec;
- if(utime(file, &buf) != 0)
- return(-errno);
+
+ /* Update accessed and/or modified time, in two parts: first set
+ * times according to the changes to perform, and then call futimes()
+ * or utimes() to apply them. */
+ ma = (HOSTFS_ATTR_ATIME_SET | HOSTFS_ATTR_MTIME_SET);
+ if (attrs->ia_valid & ma) {
+ err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
+ &atime_ts, &mtime_ts, NULL, NULL, NULL, fd);
+ if (err != 0)
+ return err;
+
+ times[0].tv_sec = atime_ts.tv_sec;
+ times[0].tv_usec = atime_ts.tv_nsec * 1000;
+ times[1].tv_sec = mtime_ts.tv_sec;
+ times[1].tv_usec = mtime_ts.tv_nsec * 1000;
+
+ if (attrs->ia_valid & HOSTFS_ATTR_ATIME_SET) {
+ times[0].tv_sec = attrs->ia_atime.tv_sec;
+ times[0].tv_usec = attrs->ia_atime.tv_nsec * 1000;
}
- if(attrs->ia_valid & HOSTFS_ATTR_MTIME_SET){
- err = stat_file(file, NULL, NULL, NULL, NULL, NULL,
- NULL, &ts, NULL, NULL, NULL, NULL);
- if(err != 0)
- return(err);
- buf.actime = ts.tv_sec;
- buf.modtime = attrs->ia_mtime.tv_sec;
- if(utime(file, &buf) != 0)
- return(-errno);
+ if (attrs->ia_valid & HOSTFS_ATTR_MTIME_SET) {
+ times[1].tv_sec = attrs->ia_mtime.tv_sec;
+ times[1].tv_usec = attrs->ia_mtime.tv_nsec * 1000;
+ }
+
+ if (fd >= 0) {
+ if (futimes(fd, times) != 0)
+ return (-errno);
+ } else if (utimes(file, times) != 0) {
+ return (-errno);
}
}
+
if(attrs->ia_valid & HOSTFS_ATTR_CTIME) ;
if(attrs->ia_valid & (HOSTFS_ATTR_ATIME | HOSTFS_ATTR_MTIME)){
err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
&attrs->ia_atime, &attrs->ia_mtime, NULL,
- NULL, NULL);
+ NULL, NULL, fd);
if(err != 0) return(err);
}
return(0);